RQModel

class pyreaqtive.models.rqmodel.RQModel

Bases: PyQt5.QtCore.QObject

RQModel Base Class.

All pyreaqtive models must inherit from this class, that provides basic get, set method and data changed signals

rq_read_only = False

Indicates if the model cannot be written to. Set() raises error

rq_data_changed

pyqtSignal data changed signal.

Widgets that are connected to models can connect slots to this signal. The model must emit to this when the state of it changes, to notify the widgets.

_rq_delete

pyqtSignal delete signal.

Signals that the model instance is about to be deleted

get()

Method to get the value of the underlying object.

Must be overridden by model

Returns

value of the object

Return type

Any

set(value)

Method to set the value of the underlying object.

Must be overridden by model

Parameters

value (Any) – New value of the model

Return type

None

__delete__()

class pyreaqtive.models.rqmodel.RQComputedModel(function, **kwargs)

Bases: object

RQComputedModel Base Class.

All pyreaqtive computed models must inherit from this class. Computed models are those that are calculated from others values, by means of a function. Changes in the linked models trigger events that updates linked widgets, than in turn calculate the function.

Parameters

function (Callable) –

__init__(function, **kwargs)

Constructor

Parameters

• function (Callable) – function to calculate the model value from input values

• **kwargs – reactive models in the function by variable name as keyword Changes in these models will trigger recalculation of the function

_variable_changed()

Variable changed slot

Called when some of the models have emitted rq_data_changed. Informs connected widgets that the function model has changed. Widgets will ask the value again and recalculate it with the new data

Return type

None

set(value)

Return type

None

get()

Get value of the model in the output format of the function

Returns

function result with current model values

Return type

Any